ASTM F1134-15(2019)
(Specification)Standard Specification for Insulation Resistance Monitor for Shipboard Electrical Motors and Generators
Standard Specification for Insulation Resistance Monitor for Shipboard Electrical Motors and Generators
ABSTRACT
This specification covers monitoring devices (monitors) for the automatic detection and signaling of low insulation resistance values in idle electrical motors or generators, or both. Monitors are intended for permanent installation in both existing or new panels and controller enclosures designed for marine application. These insulation resistance monitors shall be classified in four types: Type I are alternating current generator monitors, Type II are alternating current generator monitors, Type III are direct current motor monitors, and Type IV are direct current generator monitors. The enclosure materials used in the construction of the monitors are to be flame-retardant and the current carrying terminals shall be made of corrosion resistant material. The monitors shall isolate their measuring circuit from the line voltage, while the motor is operating, by the use of an integral isolating relay. In the design of these monitors, environmental factors shall be considered: operating temperature range, sealing, inclination, humidity, and vibration. Also, the monitor relays, voltage characteristics and operating accuracy shall be considered in the design of these monitors. Each monitor shall be subjected to the following: visual and mechanical examination and operational test.
SCOPE
1.1 This specification covers monitoring devices (monitors) for the automatic detection and signaling of low insulation resistance values in idle electrical motors or generators, or both.
1.2 Monitors are intended for permanent installation in both existing or new panels and controller enclosures designed for marine application.
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.
1.4 The following safety hazards caveat pertains only to the test method described in this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
- Status
- Published
- Publication Date
- 30-Jun-2019
- Technical Committee
- F25 - Ships and Marine Technology
- Drafting Committee
- F25.10 - Electrical
Relations
- Effective Date
- 01-Jul-2019
Overview
ASTM F1134-15(2019), Standard Specification for Insulation Resistance Monitor for Shipboard Electrical Motors and Generators published by ASTM International, defines the requirements for insulation resistance monitors used on marine vessels. These devices automatically detect and signal low insulation resistance values in idle electrical motors and generators, ensuring the reliability and safety of shipboard electrical systems.
This standard applies to monitors designed for permanent installation in both new and existing panels and controller enclosures, specifically within marine environments. It encompasses a range of device types and specifies requirements for performance, construction, materials, and testing, ensuring compliance with marine and international safety standards.
Key Topics
- Insulation Resistance Monitoring: The standard covers devices that detect and warn of deteriorating insulation in idle shipboard motors and generators, helping to prevent electrical faults.
- Device Classification: Monitors are categorized into four types:
- Type I: Alternating current (AC) motor monitors
- Type II: AC generator monitors
- Type III: Direct current (DC) motor monitors
- Type IV: DC generator monitors
- Construction and Materials:
- Enclosures must be flame-retardant (in accordance with UL 94), with terminals made from corrosion-resistant materials per 46 CFR requirements.
- Devices must ensure electrical isolation between measurement circuits and operational line voltage.
- Environmental Performance: Devices are designed to function reliably within set ranges for temperature (0°C to 50°C), humidity (up to 90% relative), inclination (up to 60°), and vibration encountered on ships.
- Design Features and Safety:
- Visual and remote signaling for low insulation resistance.
- Compatibility with remote audible or visual indicators.
- Marked for easy identification and operational accuracy within ±10% of the set point.
- Testing and Marking:
- All monitors undergo visual, mechanical, and operational testing before installation.
- Permanent marking includes manufacturer details, type, specifications, and test data.
Applications
Insulation resistance monitors specified under ASTM F1134-15(2019) are essential for marine electrical safety and maintenance programs. Their primary practical applications include:
- Continuous Safety Monitoring: Early warning of electrical insulation degradation in idle motors and generators to prevent unexpected breakdowns or hazardous conditions.
- Regulatory Compliance: Ensures compliance with U.S. Coast Guard and international standards for shipboard electrical safety.
- Flexible Installation: Suitable for both new builds and retrofits, these monitors can be installed in a variety of electrical panels and controllers on ships.
- Maintenance and Reliability: Facilitates predictive maintenance by identifying insulation weaknesses before they lead to equipment failure or safety incidents.
- Remote Supervision: Integration with remote signaling equipment enables centralized monitoring and improved alarm response times.
These monitors are designed for continuous duty and are robust enough to meet the unique environmental challenges found in maritime applications. They safeguard critical assets, minimize downtime, and contribute to the safety of crew, cargo, and vessel.
Related Standards
For comprehensive marine electrical safety and installation, consider the following related standards:
- UL 94: Test for Flammability of Plastic Materials for Parts in Devices and Appliances
- IEEE 45: Recommended Practice for Electrical Installations on Shipboard
- IEEE 100: Standard Dictionary of Electrical and Electronics Terms
- 46 CFR (Code of Federal Regulations, Title 46): U.S. maritime regulations, including electrical installation and safety standards
Implementing ASTM F1134-15(2019) alongside these references enhances electrical safety and operational effectiveness in marine environments, supporting compliance and reliability throughout the lifecycle of shipboard electrical assets.
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Frequently Asked Questions
ASTM F1134-15(2019) is a technical specification published by ASTM International. Its full title is "Standard Specification for Insulation Resistance Monitor for Shipboard Electrical Motors and Generators". This standard covers: ABSTRACT This specification covers monitoring devices (monitors) for the automatic detection and signaling of low insulation resistance values in idle electrical motors or generators, or both. Monitors are intended for permanent installation in both existing or new panels and controller enclosures designed for marine application. These insulation resistance monitors shall be classified in four types: Type I are alternating current generator monitors, Type II are alternating current generator monitors, Type III are direct current motor monitors, and Type IV are direct current generator monitors. The enclosure materials used in the construction of the monitors are to be flame-retardant and the current carrying terminals shall be made of corrosion resistant material. The monitors shall isolate their measuring circuit from the line voltage, while the motor is operating, by the use of an integral isolating relay. In the design of these monitors, environmental factors shall be considered: operating temperature range, sealing, inclination, humidity, and vibration. Also, the monitor relays, voltage characteristics and operating accuracy shall be considered in the design of these monitors. Each monitor shall be subjected to the following: visual and mechanical examination and operational test. SCOPE 1.1 This specification covers monitoring devices (monitors) for the automatic detection and signaling of low insulation resistance values in idle electrical motors or generators, or both. 1.2 Monitors are intended for permanent installation in both existing or new panels and controller enclosures designed for marine application. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 1.4 The following safety hazards caveat pertains only to the test method described in this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ABSTRACT This specification covers monitoring devices (monitors) for the automatic detection and signaling of low insulation resistance values in idle electrical motors or generators, or both. Monitors are intended for permanent installation in both existing or new panels and controller enclosures designed for marine application. These insulation resistance monitors shall be classified in four types: Type I are alternating current generator monitors, Type II are alternating current generator monitors, Type III are direct current motor monitors, and Type IV are direct current generator monitors. The enclosure materials used in the construction of the monitors are to be flame-retardant and the current carrying terminals shall be made of corrosion resistant material. The monitors shall isolate their measuring circuit from the line voltage, while the motor is operating, by the use of an integral isolating relay. In the design of these monitors, environmental factors shall be considered: operating temperature range, sealing, inclination, humidity, and vibration. Also, the monitor relays, voltage characteristics and operating accuracy shall be considered in the design of these monitors. Each monitor shall be subjected to the following: visual and mechanical examination and operational test. SCOPE 1.1 This specification covers monitoring devices (monitors) for the automatic detection and signaling of low insulation resistance values in idle electrical motors or generators, or both. 1.2 Monitors are intended for permanent installation in both existing or new panels and controller enclosures designed for marine application. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 1.4 The following safety hazards caveat pertains only to the test method described in this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM F1134-15(2019) is classified under the following ICS (International Classification for Standards) categories: 47.020.20 - Marine engines and propulsion systems. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM F1134-15(2019) has the following relationships with other standards: It is inter standard links to ASTM F1134-15e1. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ASTM F1134-15(2019) is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F1134 −15 (Reapproved 2019) An American National Standard
Standard Specification for
Insulation Resistance Monitor for Shipboard Electrical
Motors and Generators
This standard is issued under the fixed designation F1134; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope IEEE 100 Standard Dictionary of Electrical and Electronics
Terms
1.1 This specification covers monitoring devices (monitors)
2.3 Code of Federal Regulations (CFR) Standard:
for the automatic detection and signaling of low insulation
46 CFR Title 46 of the Code of Federal Regulations
resistance values in idle electrical motors or generators, or
both.
3. Terminology
1.2 Monitors are intended for permanent installation in both
3.1 Definitions—In general, definitions shall be in accor-
existing or new panels and controller enclosures designed for
dance with IEEE 100 (see Section 2).
marine application.
3.2 Definitions of Terms Specific to This Standard:
1.3 The values stated in SI units are to be regarded as
3.2.1 idle machine, n—rotary machine, when not rotating,
standard. The values given in parentheses are mathematical
owing to the absence of energy.
conversions to inch-pound units that are provided for informa-
3.2.2 monitor, n—device, generally located in a motor
tion only and are not considered standard.
starter, control panel, or main switchboard, that senses the
1.4 The following safety hazards caveat pertains only to the
leakage resistance of electrical machine windings to ground,
test method described in this specification: This standard does
while the monitored machine stands idle.
not purport to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user of this
4. Monitor Classification
standard to establish appropriate safety, health, and environ-
4.1 Type—The insulation resistance monitors covered by
mental practices and determine the applicability of regulatory
this specification shall be of the following types:
limitations prior to use.
4.1.1 Type I—Alternating current motor monitors.
1.5 This international standard was developed in accor-
4.1.2 Type II—Alternating current generator monitors.
dance with internationally recognized principles on standard-
4.1.3 Type III—Direct current motor monitors.
ization established in the Decision on Principles for the
4.1.4 Type IV—Direct current generator monitors.
Development of International Standards, Guides and Recom-
4.2 Duty Rating—All monitors shall be capable of continu-
mendations issued by the World Trade Organization Technical
ous duty operations as defined in accordance with IEEE 100.
Barriers to Trade (TBT) Committee.
2. Referenced Documents 5. Ordering Information
2.1 UL Standard:
5.1 Monitoring devices shall be ordered by including the
UL 94 Test for Flammability of Plastic Materials for Parts in
following information:
Devices and Appliances
5.1.1 Purpose or Use of Monitor(s)—Application as motor
2.2 IEEE Standards:
or generator monitor.
IEEE 45 Recommended Practice for Electrical Installations
5.1.2 Line voltage and frequency.
on Shipboard
5.1.3 Control voltage and frequency.
5.1.4 Type of starter (if motor monitor).
This specification is under the jurisdiction of ASTM Committee F25 on Ships
5.1.5 Winding configuration (if motor monitor).
and Marine Technology and is the direct responsibility of Subcommittee F25.10 on
5.1.6 Location of monitor.
Electrical.
5.1.7 Sensitivity—Set for 1 megohm (optional setting, if
Current edition approved July 1, 2019. Published July 2019. Originally approved
ɛ1
in 1988. Last previous edition approved in 2015 as F1134 – 15 . DOI: 10.1520/ requested, from 0.1 to 5 MΩ).
F1134-15R19.
Available from Underwriters Laboratories (UL), 2600 N.W. Lake Rd., Camas,
WA 98607-8542, http://www.ul.com. Available from U.S. Government Printing Office, Superintendent of
Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE), Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
445 Hoes Ln., Piscataway, NJ 08854-4141, http://www.ieee.org. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1134 − 15 (2019)
5.1.8 Remote monitoring devices. 7.3 Installation Instructions:
5.1.9 Special options requested (that is, test buttons, el-
7.3.1 The monitor vendor shall submit complete installation
evated ambient temperature usage, and so forth).
instructions with each monitor shipped including drawings as
necessary, denoting the following information:
6. Materials and Manufacture
7.3.1.1 Application as a motor or generator monitor.
6.1 General—Materials used in the construction of insula-
7.3.1.2 Line voltage level to be applied to monitor.
tion resistance monitors are to be manufactured and tested in
7.3.1.3 Type designation of monitor supplied.
accordance with IEEE 45. Materials conforming to other
7.3.1.4 Clearly identify where the connections are to be
recognized standards will be subject to approval by the
made to the equipment being monitored.
procuring agency, provided they are not less effective.
6.2 Flame-Retardant Materials—Enclosure materials used
8. Construction Specifications
in the construction of the monitors are to be flame-retardant in
8.1 General:
accordance with UL 94, and have a minimum flame rating of
8.1.1 Monitors shall be designed for ease of installation
94V-1 for monitors being installed within a motor controller
requiring no special tools and shall be fitted with a fastening
enclosure, or switchgear-type enclosure, or a minimum rating
device compatible with the vibration criteria established for
of 94-5V for monitors not installed within such an enclosure.
marine applications.
6.3 Electrical Insulation—
...




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